I'm building a Palace Cinema set, and noticed one item is in the box but the wrong color.

 

Is this worth it to report to Lego and ask for a replacement?

 

It's nothing special just a 1x4 piece in the box is a brownish one and according to the manual it should be black.

I find the colors in the manuals vs the actual colors of the bricks to be quite different, especially when dealing with the darker colors... It depends if it bugs you or not... I certainly would not lose any sleep over it but I know many people would 

Are you sure that a black piece wasn't used instead of a brown one earlier?  It'd bug me to hell so I'd ask Lego to send it to me.  If you ever sell it, you can't risk the buyer leaving you negative feedback.

 If you ever sell it, you can't risk the buyer leaving you negative feedback.

 

Never thought about that, I'll check it again and if it's missing I will contact LEGO. 

This happened to me once.  I just ordered the piece from lego.  It was just a flat 1x2 but it bugged me.

Ordering missing pieces from their site is pretty easy. I opened a Rancor pit and it didn't include the chain to go on his arm. They sent one super quick, no questions asked.

Ive built 5 sets in the last 2 weeks. 4 had parts missing. Whats up with quality control?

the one I built that was missing pieces was the Parisian restaurant.  Bought in January.  Wonder if there is a change in their quality control recently.

Ive built 5 sets in the last 2 weeks. 4 had parts missing. Whats up with quality control?

 

It has dropped significantly.  Out of the last 5 sealed boxes I opened, 2 had missing parts (40% failure rate).  A couple of years ago, I opened about 12 and not one part was missing.  It's a shame that large companies cut corners (and staff) in order to grow even bigger, just look at Apple with it's piss-poor yellow tint on new iPad screens.  I have a Mini Retina and it's abysmal, even after a dozen swaps!  I'm only keeping it as it's the best of a bad bunch.

 

This is why I say in my listings.... "Missing parts are rare but, I accept no responsibility for missing pieces if the box is factory sealed - please contact Lego Customer Services direct for missing pieces."  I've had 7 messages from the last 124 sets sold regarding missing parts but, Lego happily sent the pieces on.